TL;DR
This paper explores the cosmological implications of unparticles and Banks-Zaks physics, deriving their thermodynamic properties and constraints from Big-Bang nucleosynthesis to understand their role in the universe.
Contribution
It introduces the equation of state for unparticles and formulates Boltzmann and Kubo equations to analyze their cosmological effects and constraints.
Findings
Derived the unparticle equation of state and temperature dependence.
Formulated Boltzmann and Kubo equations for unparticles and Banks-Zaks particles.
Established constraints on unparticle degrees of freedom from Big-Bang nucleosynthesis.
Abstract
We discuss cosmological consequences of the existence of physics beyond the standard model that exhibits Banks-Zaks and unparticle behavior in the UV and IR respectively. We first derive the equation of state for unparticles and use it to obtain the temperature dependence of the corresponding energy and entropy densities. We then formulate the Boltzmann and Kubo equations for both the unparticles and the Banks-Zaks particles, and use these results to determine the equilibrium conditions between the standard model and the new physics. We conclude by obtaining the constraints on the effective number of degrees of freedom of unparticles imposed by Big-Bang nucleosynthesis.
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